Wall structure of spaced blocks



March 10, 1953 L. ZELLER ET AL WALL STRUCTURE OF SPACED BLOCKS Filed Jan. 11, 194"! INVENTORS LAWRENCE. ZELLER EDWARDHAYDEN Patented Mar. 10, 1953 OFFICE WALL s'riwo'runn F SPACED BLooKs Lawrence Zeller and Edward Hayden, Windsor, Ontario, Canada Application January 11, 1947, Serial No. 7 21,50 1

1 Claim. 1

An important feature of the invention consists in the provision of novel wall-spacing and bracing means interconnecting opposing blocks of the inner and outer walls and serving to maintain the desired width of air space between said walls.

Another feature of the invention consists in the provision of novel mean for facilitating the accurate setting of the wall blocks of each course with reference to the underlying course.

Proceeding now to a more detailed description of the invention reference will be had to the accompanying drawings, in which- Fig. 1 is a top plan view of a portion of the hollow wall structure showing a pair of oppositely disposed concrete blocks of the inner and outer wall sections which are separated by an intervening air space.

Fig. 2 is an end view of the hollow wall structure shown in Fig. 1.

Fig. 3 is a sectional view taken along the line 33 of Fig. 2.

Fig. 4 is a perspective view of the U-shaped spacer strap for interconnecting opposing blocks in the inner and outer wall sections.

Referring to the drawings, the hollow Wall structure, generally indicated at 5, comprises inner and outer wall sections, each composed of preformed concrete blocks 6. Blocks 6 are provided with peripheral grooves 1 about the side, top and bottom end edges in which mortar is placed to cement the blocks together in edge to edge relation to provide concealed joints. The blocks of the inner and outer Wall sections are laid in spaced parallel courses, which courses are superimposed one upon the other to form the separate inner and outer wall sections.

The opposing blocks of the inner and outer walls are interconnected by wall spacing and bracing means indicated at 8. The spacing means consists of a U-shaped spacer strap 9 adapted to be fitted in U-shaped loop-forming straps ill on the inner surface of the opposing blocks 6. The arms ll of straps ID are L-shaped at their free marginal ends to provide anchoring flanges l2. The arms I! and flanges I2 are embedded in the concrete block with the marginal portions of the arms adjacent the bight projecting from the inner face of the block to provide vertically disposed spacer strap loops I4.

Spacer straps 9 are provided with side legs [5 slotted at their free ends, as indicated at iii, to form a pair of spring extensions il sions I! are tapered at their marginal end edges I8. Notches I9 are provided along the side edges of extensions i1 adjacent the tapered end edges H3. The side legs'l5 are slightly wider than the loop i l of strap It but the notched portion is substantially equal to the distance between the side arms Ii of strap 10. When side leg I5 is inserted in loop I4 the wedging action on the tapered ends l8 forces extensions I! to close the gap provided by slot IS. The extensions then pass through the loop until notches it are spanned. At this point pressure is released and the extensions !l are allowed to spring back to their normal position. Thus notches I9 serve as spring catche which hold the spacer strap 9 in clamping engagement with loop-forming straps ID.

The spacer straps 9 are arranged in the straps In with the upper portion of side legs l5 projecting beyond the upper edge of the blocks to which they are fitted. This projecting portion acts as a spacer guide for the bottom portion of the superimposed block in the next course of each wall section.

An angle iron 20 having arms 2i and 22 is fitted to the inner surface of the blocks in the lower portion thereof. Arm 2!, having an anchoring flange 23 along the free marginal end edge, is embedded in the concrete block. Arm 22 extends downwardly from arm 2| to overlap the next lower block. Arm 22 serves as an alignment member for maintaining alignment of the blocks as they are superimposed one upon the other.

The spacer strap in reality serves a triple purpose. Its primary object is to provide a spacer means for the inner and outer wall sections. The side legs I5, however, being in abutting engagement with the inner surfaces of opposing blocks and bein fitted in clamping engagement with loop-forming straps it, serve as a bracing means for said blocks. Thirdly, the upper portion of legs l5, projecting beyond the top of the block, serves a a means for aligning and bracing the inner surface of the next superimposed block. Thus, while the depending alignment member 22 serves to keep the block from receding in the inner surface of the wall section, the upper portions of legs l5 serve to keep said block from protruding into the said inner surface.

The side arms ll of straps I0 and arm 2| of alignment member 20 may be slotted, as indicated at 24, to provide a further anchoring means. The concrete which fills the slots serves Extenone wall opposingthe inner surfacerof a COR-.2: responding "block or the opposing wall, U-shaped 100p members formed from flat metal plates of substantial width, bent to provide a loop bightw' portion, and a pair of parallel arms extending from the ends of said loop bightportionfsaid= U-shaped loop members having theircparallel-, arms embedded in the concrete blocksnofweachi wall in vertically spaced parallel relation with the loop bight portion, and marginalportio'ris -of the arms adjacent the loop bight portion project-r:

ing from the inner surface" of said blocks to present vertically disposed inwardly projecting reing the corresponding-blocks :of opposing alls inspaced relation to one anothen'each'of said; spacer straps being formed from a flat metal a.

plate of substantial widthfbent to provide. a

spacer strap bight'portion, and parallel" side leg members at opposite ends .of the spacer ,strap,

bight ortion, said leglmem'ber beingfslotted at their free ends and notched along theirside edges providing spring catches engaging with the projecting marginal portions of the arms of said U-shaped loop members adjacent the loop bight portion, the upper edge of said U-shaped loop members being spaced below the upper edge of its block a distance less than the length of said leg member projecting above the notches therein, whereby :,an; ,upper-.portionof said/leg: members extends above therupper, edge of its block and between the inner surfaces of the corresponding blocks of the next course of each opposing wall with portions intermediate the length of the last mentioned blocks'freely butted against said upper portion ofsaid leg members.

LAWRENCE ZELLER.

EDWARD HAYDEN.

REFERENCES CITED The following references are of record in the file of this patent UNITED STATES PATENTS Number Name Date 428,063 Boda May 20, 1890 799,784 Fisher Sept. 19, 1905 838,844 Clayton Dec. 18, 1906 1,426,237 Witzberger Aug. 15, 1922 1,890,532 lj Skolnik Deck 13, 1932 FOREIGN. PATENTS;

Number Country Date 124,735 Great- Britain Dec. 11,1919 

